Video: Novak Djokovic wins 54-shot rally vs. Rafael Nadal in U.S. Open final

Rafael Nadal and Novak Djokovic have been known to play marathon matches filled with grueling points. Well, how does a 54-shot rally sound? That's what transpired in the middle of the second set Monday during their U.S. Open final.

Djokovic won the point to break for a 4-2 lead. Nadal immediately broke back, but Djokovic responded with another break and a hold to win the set and level the match at a set apiece. (Click here for live game-by-game analysis of the match.)